Lady Anna Mackenzie cropped from
Archibald Campbell, 9th Earl of Argyll; Countess of Argyll, by unknown artist. See source website for additional information.This set of images was gathered by
User:Dcoetzee from the National Portrait Gallery, London website using a special tool. All images in this batch are listed as "unknown author" by the NPG, who is diligent in researching authors, and was donated to the NPG before 1939 according to their website.